Index Of Vendor Phpunit Phpunit Src Util Php Evalstdinphp Work May 2026
This vulnerability is found in older versions of , a popular testing framework for PHP, and specifically targets the file eval-stdin.php . If this file is publicly accessible—usually due to a misconfigured production environment—an attacker can execute arbitrary PHP code on the server without any authentication. The Core Vulnerability: CVE-2017-9841
By design, PHPUnit is a development tool. Its security policy explicitly states that it should never be installed in a production environment. However, it often ends up there due to: Inside the Surge of PHP and IoT Exploits with Qualys TRU This vulnerability is found in older versions of
This flaw has a CVSS score of 9.8 (Critical) , as it allows for full server compromise, data theft, and the installation of malware or ransomware. Why This Happens in Production Its security policy explicitly states that it should
The script contained code similar to eval('?>' . file_get_contents('php://input')); . The php://input stream reads the raw data from a request body. When combined with eval() , this creates a direct path for an attacker to send a malicious PHP script via an HTTP POST request and have the server execute it immediately. file_get_contents('php://input'));
The vulnerability exists because of how eval-stdin.php was originally written. In older versions of PHPUnit, the script used a function to evaluate PHP code passed through the raw HTTP POST body.
PHPUnit versions before 4.8.28 and 5.x before 5.6.3 are vulnerable.